Magnetic susceptibility and neutron powder diffraction experiments have been performed on the noncentrosymmetric ternary compound Pr5Ru3Al2. The previously reported ferromagnetic transition at 24K was not detected in our improved-quality samples. Instead, magnetic ordering was observed in the DC magnetic susceptibility at T-c similar or equal to 3.8 K. The neutron powder diffraction experiment further indicates that an incommensurate magnetic structure is established below T-c with the magnetic modulation vector q similar or equal to (0.066, 0.066, 0.066) (r.l.u.). A candidate for the magnetic structure is proposed using representation analysis.